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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






2. Front feet and head first. (except for hogs and dogs)






3. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






4. Not under a timeline - cow can not be sold as steak






5. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






6. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






7. Male on one pin and female on other side






8. 24 hours before end of estrus cycle






9. Animals which have many estrous periods per year (ex: cow - sow)






10. 14-19 (17) days






11. 30-38 hours after estrus cycle begins






12. 283 days






13. Days which have increasing daylight hours

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14. Produce testosterone. located between the seminiferous tubules






15. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






16. Actual heat cycle (period)






17. Completes uterine growth initiated by estrogen and prepares the uterus for nourishment of developing embryo if pregnancy occurs - supports pregnancy by maintaining quiescent state of reproductive tract and suppresses mating behavior - prevents ovulat






18. Way to know everything is alright with the breeding male






19. Why does estrus happen before ovulation?






20. Prevent the cow from getting an infection from the calve






21. 147 days






22. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






23. (LH) stimulates the Leydig cells to produce testosterone






24. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






25. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)






26. Front feet and head first. (except for hogs and dogs)






27. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






28. 30 hours after estrus begins






29. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






30. 1-3 days






31. Urinary calculi.






32. Important 'landmark' during palpation






33. When are steers and heifers weaned from bottle feeding?






34. Earlier you castrate a male - the easier it is on the animal. the longer you wait - death rates increase






35. Allows extension of penis without fibro-elastic penis






36. Animal which has been castrated after puberty






37. Superior genes are _______ to multiply






38. (LH) stimulates the Leydig cells to produce testosterone






39. (switzerland) 2nd in size and milk production - most muscle -






40. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






41. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






42. Milk is 15% ________ and 85% __________.






43. Larger the cow - more milk is produced; smaller the cow - less milk is produced






44. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)






45. Animals which have only one estrous cycle (ex: dog - fox)






46. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






47. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge






48. Important 'landmark' during palpation






49. 1. need to be restricted in amt of grain - 2. no more than 70% of ration can be concentrates. 3. *Acidic acid has to be produced in order for milk synthesis to occur (30% forages)






50. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.